From: Sasha Levin Date: Thu, 13 Jun 2013 22:41:16 +0000 (-0400) Subject: lockdep: Be nice about building from userspace X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8dce7a9a6f4ca7163161a80a4603b66c88c5de8e;p=openwrt%2Fstaging%2Fblogic.git lockdep: Be nice about building from userspace Lockdep is an awesome piece of code which detects locking issues which are relevant both to userspace and kernelspace. We can easily make lockdep work in userspace since there is really no kernel spacific magic going on in the code. All we need is to wrap two functions which are used by lockdep and are very kernel specific. Doing that will allow tools located in tools/ to easily utilize lockdep's code for their own use. Signed-off-by: Sasha Levin Signed-off-by: Peter Zijlstra Cc: penberg@kernel.org Cc: torvalds@linux-foundation.org Link: http://lkml.kernel.org/r/1352753446-24109-1-git-send-email-sasha.levin@oracle.com Signed-off-by: Ingo Molnar --- diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 576ba756a32d..eb8a54783fa0 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -590,6 +590,7 @@ static int very_verbose(struct lock_class *class) /* * Is this the address of a static object: */ +#ifdef __KERNEL__ static int static_obj(void *obj) { unsigned long start = (unsigned long) &_stext, @@ -616,6 +617,7 @@ static int static_obj(void *obj) */ return is_module_address(addr) || is_module_percpu_address(addr); } +#endif /* * To make lock name printouts unique, we calculate a unique @@ -4115,6 +4117,7 @@ void debug_check_no_locks_held(void) } EXPORT_SYMBOL_GPL(debug_check_no_locks_held); +#ifdef __KERNEL__ void debug_show_all_locks(void) { struct task_struct *g, *p; @@ -4172,6 +4175,7 @@ retry: read_unlock(&tasklist_lock); } EXPORT_SYMBOL_GPL(debug_show_all_locks); +#endif /* * Careful: only use this function if you are sure that